<html>
<head>
<title>边框宽度 border-width</title>
<style type="text/css">
.d1 {border-style:solid;}
.d2 {border-width:thin;border-style:solid;}
.d3 {border-width:thick;border-style:solid;}
.d4 {border-width:10px;border-style:solid;}
.d5 {border-width:5mm;border-style:solid;}
</style>
</head>
<body>

<div class= "d1">这个div的CSS边框宽度(border-width)属性缺省值是medium。</div>
<br>
<div class= "d2">这个div的CSS边框宽度(border-width)属性值是thin。</div>
<br>
<div class= "d3">这个div的CSS边框宽度(border-width)属性值是thick。</div>
<br>
<div class= "d4">这个div的CSS边框宽度(border-width)属性值是10px。</div>
<br>
<div class= "d5">这个div的CSS边框宽度(border-width)属性值是5mm。</div>

</body>
</html>

